ttc for years

we been trying for years my female health department doctor says i should be able to get pregnant no problem thing is that was years ago and here i am 27 and still nothing it breaks my heart and makes me depressed even more when my family asks me all the time why we don't have any yet u think if i was able to we would it akes e so upset that these young people having babies when they dont need to and here we r trying and getting no where i balled my eyes out yesterday after we got home from our Thanksgiving dinner because we was asked why we have none yet